Which of the following compound undergoes disproportionation in presence of SO2 gas ? — Redox Reactions and Volumetric Analysis Chemistry Question

💡 Solution & Explanation

Step 1: Barium chromate (BaCrO4) and lead chromate (PbCrO4) are highly insoluble precipitates with extremely low solubility products (Ksp). Step 2: Acetic acid (AcOH) is a weak acid and does not provide a high enough concentration of hydronium ions to shift the equilibrium and dissolve these highly stable precipitates. Step 3: Since no chemical dissolution or reaction occurs, this process is classified as no reaction (type D), which corresponds to option (d).